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| author |   Daniel Lezcano <daniel.lezcano@linaro.org> | 2014-11-12 16:03:50 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-11-12 21:17:27 +0100 |
| commit | b82b6cca488074da3852e8a54fde1d9f74bf1557 (patch) | |
| tree | 20db4b6c0d6a0180610fa392f32db7aeea515321 /include/linux/cpuidle.h | |
| parent | Linux 3.18-rc4 (diff) | |
| download | linux-dev-b82b6cca488074da3852e8a54fde1d9f74bf1557.tar.xz linux-dev-b82b6cca488074da3852e8a54fde1d9f74bf1557.zip | |
cpuidle: Invert CPUIDLE_FLAG_TIME_VALID logic
The only place where the time is invalid is when the ACPI_CSTATE_FFH entry
method is not set. Otherwise for all the drivers, the time can be correctly
measured.
Instead of duplicating the CPUIDLE_FLAG_TIME_VALID flag in all the drivers
for all the states, just invert the logic by replacing it by the flag
CPUIDLE_FLAG_TIME_INVALID, hence we can set this flag only for the acpi idle
driver, remove the former flag from all the drivers and invert the logic with
this flag in the different governor.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle.h')
| -rw-r--r-- | include/linux/cpuidle.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 25e0df6155a4..a07e087f54b2 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -53,7 +53,7 @@ struct cpuidle_state { }; /* Idle State Flags */ -#define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ +#define CPUIDLE_FLAG_TIME_INVALID (0x01) /* is residency time measurable? */ #define CPUIDLE_FLAG_COUPLED (0x02) /* state applies to multiple cpus */ #define CPUIDLE_FLAG_TIMER_STOP (0x04) /* timer is stopped on this state */ @@ -90,7 +90,7 @@ DECLARE_PER_CPU(struct cpuidle_device, cpuidle_dev); * cpuidle_get_last_residency - retrieves the last state's residency time * @dev: the target CPU * - * NOTE: this value is invalid if CPUIDLE_FLAG_TIME_VALID isn't set + * NOTE: this value is invalid if CPUIDLE_FLAG_TIME_INVALID is set */ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev) { |